1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** POSIX wrapper for THREADX */
17 /** */
18 /** */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 /* Include necessary system files. */
24
25 #include "tx_api.h" /* Threadx API */
26 #include "pthread.h" /* Posix API */
27 #include "px_int.h" /* Posix helper functions */
28
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* pthread_setcancelstate PORTABLE C */
35 /* 6.1.7 */
36 /* AUTHOR */
37 /* */
38 /* William E. Lamie, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* The pthread_setcancelstate()function shall atomically both set the */
43 /* calling thread�s cancelability state to the indicated state and */
44 /* return the previous cancelability state at the location referenced */
45 /* by oldstate.Legal values for state are PTHREAD_CANCEL_ENABLE and */
46 /* PTHREAD_CANCEL_DISABLE. */
47 /* */
48 /* INPUT */
49 /* */
50 /* state New cancelability state to be set */
51 /* oldstate Pointer to old cancelability state */
52 /* */
53 /* OUTPUT */
54 /* */
55 /* 0 if successful */
56 /* Value in case of any error */
57 /* */
58 /* CALLS */
59 /* */
60 /* None */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
71 /* */
72 /**************************************************************************/
pthread_setcancelstate(INT state,INT * oldstate)73 INT pthread_setcancelstate (INT state, INT *oldstate)
74 {
75
76 TX_INTERRUPT_SAVE_AREA
77
78 TX_THREAD *thread_ptr;
79 POSIX_TCB *pthread_ptr;
80
81 /* First check for validity of the new cancel state to be set */
82 if ( (state == PTHREAD_CANCEL_ENABLE) || (state == PTHREAD_CANCEL_DISABLE) )
83 {
84 TX_DISABLE
85
86 /* Get the thread identifier of the currently running thread */
87 thread_ptr = tx_thread_identify();
88 /* get posix TCB for this pthread */
89 pthread_ptr = (POSIX_TCB *)thread_ptr;
90 *oldstate = pthread_ptr->cancel_state;
91 pthread_ptr->cancel_state = state;
92
93 TX_RESTORE
94
95 return(OK);
96 }
97 else
98 {
99 posix_errno = EINVAL;
100 posix_set_pthread_errno(EINVAL);
101 return (EINVAL);
102 }
103 }
104
